If you enter the command: l erieord and the response looks like this:
Enter the following:
pwd and hit enter
If the response looks like this:
Then this means you are in the incorrect directory. (Actually, if the response is anything other than /users/data/curtze1, you are in the wrong directory)
Enter this command: cd /users/data/curtze1
Then you will be able to re-enter: l erieord to find the file size